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SyncobjCtx: add from_dev_t

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This commit is contained in:
Julian Orth 2026-03-11 11:48:29 +01:00
parent 0a4ce7e458
commit 7192905158
3 changed files with 24 additions and 19 deletions
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2
src/video/drm.rs
View file

@ -151,6 +151,8 @@ pub enum DrmError {
QueueSequence(#[source] OsError),
#[error("Could not stat the DRM fd")]
Stat(#[source] OsError),
#[error("Device has no device nodes")]
NoDeviceNodes,
}
fn render_node_name(fd: c::c_int) -> Result<Ustring, DrmError> {

16
src/video/drm/syncobj.rs
View file

@ -10,7 +10,7 @@ use {
oserror::OsError,
},
video::drm::{
DrmError,
DrmError, NodeType, get_drm_nodes_from_dev,
sys::{
DRM_SYNCOBJ_CREATE_SIGNALED, DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE,
DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_TIMELINE,
@ -107,6 +107,20 @@ impl SyncobjCtx {
}
}
pub fn from_dev_t(dev: c::dev_t) -> Result<Self, DrmError> {
let nodes = get_drm_nodes_from_dev(uapi::major(dev), uapi::minor(dev))
.map_err(DrmError::GetNodes)?;
let path = nodes
.get(&NodeType::Render)
.or_else(|| nodes.get(&NodeType::Primary))
.ok_or(DrmError::NoDeviceNodes)?;
let device_fd = uapi::open(path.as_c_str(), c::O_RDWR | c::O_CLOEXEC, 0)
.map(Rc::new)
.map_err(Into::into)
.map_err(DrmError::ReopenNode)?;
Ok(Self::new(&device_fd))
}
fn get_handle(&self, syncobj: &Syncobj) -> Result<SyncobjHandle, DrmError> {
if let Some(handle) = self.inner.handles.get(&syncobj.id) {
return Ok(handle);